If your interior isn't smelling like a new car anymore, here is a wonderful scent to freshen the air. Our New Car Scent offers a fresh, natural air to your vehicle and will bring back that wonderful smell when your vehicle was new. The scent lasts about a week with just a couple sprays under each seat. I saturate a small sponge and place it under the seat near an air vent so the wonderful smell flows throughout the cabin. Spray a little in your vacuum before you turn it on.